D19: Intramembranous bone formation in a section preserving nicely the osteogenic layer of osteoblasts (arrow) actually making new bone. Note how these cells line up directly on the bone spicules. Find other examples of this on this slide. Question: How are osteoblasts different from osteocytes? Find osteocytes here. The arrowhead indicates a blood vessel (use the included blood cells as your clue.)